package cn.pzhu.jspdb.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import cn.pzhu.jspdb.bean.User;
import cn.pzhu.jspdb.dao.UserDao;

/**
 * Servlet implementation class LoginServlet
 */
public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LoginServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("SaveServlet doPOST");
		request.setCharacterEncoding("UTF-8");
		String loginName = request.getParameter("loginName");
		String password = request.getParameter("password");
		String errorMsg="";
		boolean errorFlag=false;
		if(loginName!=null){
			User u=new UserDao().getUserByLoginName(loginName);
			if(u!=null){
				if(password.equals(u.getPassword())){
					HttpSession session=request.getSession();
					response.sendRedirect("v3/list");
				}else{
					errorFlag=true;
					errorMsg+=" 密码不对哦！<br/>";
				}
			}else{
				errorFlag=true;
				errorMsg+="用户名不存在<br/>";
			}
		}else{
			errorFlag=true;
			errorMsg+="请输入登录名<br/>";
			
		}
		if(errorFlag){
			request.setAttribute("error", errorMsg);
			request.getRequestDispatcher("login.jsp").forward(request, response);
		}
		
	}

}
